Ratings: ‘Supergirl’ Soars to Its Biggest CW Episode Yet

“Supergirl” just flew to its most-watched episode on the CW to-date — but Melissa Benoist had some help from her DC Universe friends.

The former CBS show’s sophomore fall finale last night marked Part 1 of the week’s four-way crossover with “Arrow,” “The Flash” and “DC’s Legends of Tomorrow.” That combination led CW to its most-watched Monday in nearly seven years.

NBC was first in ratings with a 1.7 rating/6 share in the advertiser-coveted 18-49 demographic and in total viewers with an average of 8.1 million, according to preliminary numbers. “The Voice” at 8 p.m. scored a 2.0/6 and 9.7 million viewers. At 10, “Timeless” received a 1.1/4 and 4.9 million viewers.

ABC was second in ratings with a 1.2/4 and in viewers with 6.8 million. “CMA Country Christmas” at 8 earned a 1.3/4 and 7.8 million viewers. That demo rating was up a whopping 44 percent from 2015’s version, and the overall audience count grew 34 percent. The special was preempted in almost 3.5 percent of the country, however, for “Monday Night Football.” “Conviction” at 10 had a 1.0/3 and 4.7 million viewers.

Fox was third in ratings with a 1.1/4 and fourth in viewers with 4 million. “Gotham” at 8 got a 1.1/4 and 3.7 million viewers. At 9, “Lucifer” posted a 1.2/4 and 4.4 million viewers.

Who is the father of Rory's baby?Creator Amy Sherman-Palladino finally revealed the final four words of the series in the last episode of "A Year in the Life," with Rory surprising her mother -- and viewers -- with news of her pregnancy. But the baby's father was never revealed, leaving fans' imaginations to run wild.

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Logan HuntzbergerLogan is the most obvious contender for father, given that he's the only person Rory is shown to be sleeping with on the show. Plus, the thematic parallels between Logan and Christopher would make the pregnancy especially resonant.

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PaulRory was technically in a relationship throughout the entire run of the revival, even though she never actually seemed to remember it. So maybe she did sleep with Paul what's-his-name at some point, and just forgot about it.

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The Wookiee One of Rory's lowest points of the revival comes in "Spring," when in a moment of desperation, she has an alcohol-fueled one-night stand with a guy dressed as a Wookiee. The timing might be a bit off since Rory reveals her pregnancy in "Fall," but it's certainly possible.

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Surrogacy In the revival, Paris runs a fancy fertility clinic frequented by the likes of Neil Patrick Harris, raising the possibility that Rory's baby isn't even hers. The younger Gilmore even jokes at one point that her former roommate had once eyed her as a surrogate.

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Jess Mariano This seems like wishful thinking more than anything, but Jess fans have been hanging on to hope that Luke's nephew could be the father of Rory's baby, based on little more than one longing glance.

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Who sent the letter to Emily?In another hanging storyline, Lorelai and Emily made an attempt at therapy in the "Spring" episode, leading to the revelation that Emily received a "heinous" letter filled with accusations and abuse on her birthday. Lorelai vehemently denied sending letter, but the issue was never resolved.

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Lorelai actually did send the letterIt seems unlikely that Lorelai would outright lie about having sent the letter -- she admits as much to her mother -- but it's hard to deny that anybody else has as much motive to send an expletive-laced letter to Emily Gilmore as she does. Maybe she just got so mad that she forgot?

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Teenage LorelaiEmily doesn't give many details as to when she found the letter, just that it was received on her birthday. It wouldn't be entirely out of character for her to bring up a decades-old grudge she's been holding against Lorelai since her rebellious teen years.

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TrixRichard's mother already devastated Emily with a letter once, when it was revealed in the original series that she begged her son to marry someone else on the eve of their wedding. And Trix was also named Lorelai Gilmore, so it fits.

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Rory An angry letter doesn't really seem like Rory's style, but as the third Lorelai Gilmore, she's in the running.

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Emily's lyingOr maybe she just made the whole thing up.

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Netflix’s revival ended with two major unresolved plot points surrounding Rory, Lorelai and the residents of Stars Hollow